name: "Cron triggers for CI"
on:
  schedule:
    # “At 02:34 on Monday.”
    #
    # https://crontab.guru/#34_2_*_*_1
    #
    # This is used to perform a weekly run of CI for all release branches,
    # ideally in off-work-hours to not clog up the queue.
    - cron: '34 2 * * 1'

    # "At 02:34 on Sunday and every day-of-week from Tuesday through Saturday"
    #
    # https://crontab.guru/#34_2_*_*_0,2-6
    #
    # This is used to perform a daily run of CI for the `main` branch to prime
    # caches for github actions and the merge queue. Note that this frequency
    # doesn't overlap the above schedule to avoid triggering two builds on the
    # same day.
    - cron: '34 2 * * 0,2-6'

  # Allow manually triggering this request via a button
  workflow_dispatch:

permissions:
  issues: write
  actions: write

jobs:
  run:
    if: "github.repository == 'bytecodealliance/wasmtime' || !github.event.schedule"
    name: Trigger release branch CI
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v6
        with:
          submodules: true
          fetch-depth: 0

      # Always trigger a CI run on the `main` branch to prime GHA caches.
      - run: gh workflow run main.yml --ref main
        name: Trigger main branch CI daily
        env:
          GH_TOKEN: ${{ github.token }}

      # If this is a once-a-week run then additionally trigger CI for release
      # branches to ensure that the CI there is kept up-to-date.
      - run: rustc ci/trigger-release-branch-ci.rs
      - run: ./trigger-release-branch-ci
        name: Trigger release branch CI weekly
        env:
          GH_TOKEN: ${{ github.token }}
        if: "github.event.schedule == '34 2 * * 1' || !github.event.schedule"